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WO/2001/032563A1 |
Fluorinated emulsifiers, in particular, perfluorooctanoic acid are bound to anionic exchange resins for the purification of aqueous effluent from the production of fluoropolymers. Said emulsifiers may be quantitatively eluted from the ex...
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WO/2001/030495A1 |
Ion exchange resin granules containing a crosslinked polymerized $g(a),$g(b)-unsaturated acid, like acrylic acid, or a vinyl monomer containing an amino group, like polyvinylamine, and methods of manufacturing the resin, are disclosed.
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WO/2001/028651A1 |
A method for removing corrosive contaminants from a polar extraction solvent comprises adding water to the solvent to provide a mixture. Then the mixture is contacted with a basic ion exchanger resin to remove the corrosive contaminants....
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WO/2001/029105A1 |
A functional material having the higher ability to adsorb and separate than conventional ones. The material having a separating function is characterized by being formed by incorporating polymer side chains derived from a p-haloalkylstyr...
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WO/2001/027331A2 |
The present invention describes a method for separating heteroduplex and homoduplex DNA molecules in a mixture. In the method, such a mixture is applied to an anion-exchange chromatography medium. The heteroduplex and homoduplex molecule...
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WO/2001/025285A1 |
Chromatographic beads with pores large enough to serve as through-channels for fast diffusion and a substantial absence of pores of smaller diameters that would cause band broadening due to slow diffusive transport, are formed by suspens...
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WO/2001/023626A1 |
A process for the recovery of gold from anion exchange resins, the method comprising eluting with a nitrate salt to displace gold from the resin. The gold has been loaded on to the resin from a thiosulphate leach solution or pulp. The ni...
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WO/2001/021269A2 |
A carbon dioxide adsorption unit (1) comprises a container (4) having an inlet (8) and an outlet (9). A cartridge (5) of adsorption material, which may be an ion exchange resin or an oxide of an element of the lla group, is removably pla...
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WO/2001/012318A1 |
An improved separation process for the continuous catalytic oxidation of aromatic alkyls for the production of aromatic carboxylic acids in a liquid solvent medium, wherein the reactor product stream is withdrawn from the oxidation proce...
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WO/2001/010777A1 |
The invention relates to a method for preparing highly stabilised hydroxylamine solutions. According to said method, a starting aqueous hydroxylamine solution is treated for separating anions by means of an anion exchanger which has been...
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WO/2001/009202A1 |
The invention provides ion exchange and electrochemical methods and devices employing anion exchange polymers produced by substantially simultaneous quaternization and polymerization reactions. Anion selective polymers are produced in ac...
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WO/2001/005710A1 |
The invention relates to a method for recovering fluorinated emulsifiers from an aqueous phase containing small quantities of fluoro-polymer particles. According to the inventive method, the aqueous phase is treated with a small quantity...
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WO/2001/004054A1 |
A composite-metal polybasic salt which contains, as metallic ingredients, a trivalent metal, zinc metal, and a divalent metal and has a novel crystalline structure. It has anion-exchanging properties and is useful by itself as an anion e...
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WO/2001/002076A1 |
A method of increasing anion ion exchange capacity by using certain multivalent acids or salts. Also, a method for modifying pH working range of weakly basic anion ion exchangers for the purpose of metal extraction or other ion exchange ...
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WO/2001/000717A1 |
The invention relates to a method and a reaction installation for chemically coating shaped bodies with covalently bonded polymers. The polymerization step and optionally preceding or subsequent reaction steps are carried out in a reacti...
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WO/2000/076633A1 |
A process for the reclamation of spent aqueous alkanolamine solutions comprising contacting a spent aqueous alkanolamine solution (10) with a strong base ion exchange vesin (40, 50) for time sufficient to sorb from the aqueous alkanolami...
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WO/2000/070041A1 |
Mixed-bed solid phases are provided, with methods for using such solid phases to isolate target nucleic acids, such as plasmid DNA, chromosomal DNA, RNA, or nucleic acids generated by enzymatic amplification from contaminants, including ...
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WO/2000/069872A2 |
pH dependent ion exchange matrices are provided, with methods for making such matrices, and methods for using such matrices to isolate a target nucleic acid, as such as plasmid DNA, chromosomal DNA, or RNA from contaminants, including pr...
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WO/2000/068286A1 |
The invention relates to insoluble popcorn polymers that are only slightly capable of swelling and that contain a) 50 to 99 wt. % of styrene and/or at least one monounsaturated styrene derivative; b) 0.1 to 40 wt. % of at least one N-vin...
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WO/2000/056666A1 |
A process for removing nitrate ions from an aqueous solution thereof which comprises passing the solution through an electrochemical cell comprising at least one anode and at least one cathode and passing a current therebetween, wherein ...
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WO/2000/050161A1 |
The present invention provides a positively charged microporous membrane having a protein binding capacity of about 25 mg/ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive ch...
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WO/2000/050465A2 |
Resins containing apolar styrene-divinylbenzenc-type matrices may solvate in aqueous medium, depending on the amount of positively charged ammonium groups incorporated in its structure. Experiments with a resin containing 4.9 mmol/g amin...
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WO/2000/045951A1 |
Novel material for chromatographic separations, processes for its preparation, and separations devices containing the chromatographic material. In particular, the disclosure describes porous inorganic/organic hybrid particles having a ch...
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WO/2000/044389A2 |
The invention concerns a method for preparing membrane vesicles from a biological sample, characterised in that it comprises at least a step which consists in treating the sample by anion-exchange chromatography and/or gel permeation. Th...
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WO/2000/035971A1 |
Emulsifiers containing fluorine can be separated out of fluoropolymer solutions by adding a non-ionic emulsifier to the dispersion, by separating the emulsifier which contains fluorine by bringing the same into contact with an anion exch...
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WO/2000/033958A1 |
A water treatment module and process for treating power plant condensate water utilizing a sulfonated ion exchange resin comprising copolymer beads having an interpenetrating polymer network of at least two polymer components wherein at ...
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WO/2000/034386A2 |
Gel-type copolymer beads are described which are useful as ion exchange resins such as those used in the treatment of power plant condensate water. The subject copolymer beads possess an interpenetrating polymer network of at least two p...
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WO/2000/033367A1 |
A wet cleaning apparatus wherein rinse is carried out using ultrapure water as rinsing water by feeding the ultrapure water to a point of use within the apparatus through a pipeline, characterized in that a module (20) charged with a por...
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WO/2000/009588A1 |
The present invention relates to the reaction and to the reaction products of organo-metallic compounds, preferably Li organic compounds, deprotonised engineering-polymers with an aryl main chain and with various aromatic carbonyle compo...
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WO/1999/064480A1 |
Embodiments of the present invention are directed to porous resins for solid phase extractions. The resins feature at least one hydrophobic component, at least one hydrophilic component and at least one ion exchange functional group. The...
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WO/1999/062858A1 |
Fluorinated emulsifying agent acids can be isolated from waste waters by initially removing fine-particulate solids and/or fractions that can be converted into solids from the waste water, preferably by precipitation, by subsequently bri...
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WO/1999/062830A1 |
The invention relates to a method for recovering fluorinated emulsifying agent acids from waste waters, characterized in that the finely dispersed solids in the waste water are stabilized with a nonionic or cationic surfactant or an anal...
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WO/1999/061904A1 |
A separation by chromatography using a packing material comprising an electrically charged copolymer is carried out in which a mobile phase is an aqueous phase and the effective charge density on the surface of a stationary phase can be ...
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WO/1999/055626A1 |
The present invention relates to the modification of organic ionites for imparting specific properties to the same, wherein this invention involves introducing into the ionite composition some low-solubility inorganic compounds that enab...
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WO/1999/056287A1 |
A method for treating a radioactive waste which comprises contacting a liquid waste containing a radioactive isotope with a selective adsorbent for the element of the isotope, which is soluble or easily decomposable, to thereby adsorb th...
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WO/1999/054366A1 |
The invention relates to a method for producing gel-like anion exchangers by aminating cross-linked gel-like styrene divinylbenzene bead polymers containing alkyl halide groups, in the presence of an inorganic salt and in the absence of ...
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WO/1999/054441A1 |
A method of enriching a solution of an adenovirus comprising applying a mixed solution comprising an adenovirus and at least one undesired type of biomolecule to an anion exchange chromatography resin containing a binding moiety selected...
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WO/1999/051724A1 |
The invention provides methods of purifying human acid $g(a)-glucosidase, particularly from the milk of transgenic animals. The methods employ two chromatography steps. The first step is usually anion exchange chromatography and the seco...
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WO/1999/047227A1 |
The invention relates to methods for separating biological contaminants (viruses, nucleic acids and/or endotoxins) from biological products, or for reducing the content of such biological contaminants in said biological products. The sam...
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WO/1999/040990A1 |
Disclosed is a method of removing anionic pollutants from wastewater, comprising contacting said wastewater with an anion-binding polymer, whereby said anionic pollutants are absorbed to said polymer. Also disclosed is a method of removi...
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WO/1999/038595A1 |
Method and apparatus for generating an acid or base, e.g., for chromatographic analysis of ions. For generating a base, a cation source, such as a salt, cation hydroxide or cation exchange resin, is provided in a cation reservoir (10) se...
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WO/1999/036151A1 |
The present invention is directed to a process of removing trace acidic impurities from an impure solution of photoacid generating compounds in a solvent, comprising contacting an impure solution of at least one photoacid generating comp...
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WO/1999/030146A1 |
The invention relates to a process for obtaining L-dihydroorotic acid by chromatography on an anionic exchange material in a base water mixture under a pressure from about 1.1 MPa to about 40 MPa. The process can be used to investigate t...
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WO/1999/026979A1 |
A method for producing an oligomeric form of $g(a)-lactalbumin which is in the molten globule-like state is described. The method suitably comprises exposing a source of $g(a)-lactalbumin in which the $g(a)-lactalbumin is preferably in t...
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WO/1999/024139A1 |
A process for separating a compound from a mixture of different compounds is disclosed for compounds comprising at least two negatively charged groups connected by a linker group. The process comprises treating the mixture with a materia...
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WO/1999/022868A1 |
Methods for cell lysis and purification of biological materials, involving subjecting a sample to high pressure. Also featured is an apparatus for practicing the methods.
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WO/1999/023125A1 |
The copolymer consists of the basic structural monomer elements A1, A2 and A3, whose total amount equals 100 wt. % and wherein (a1) = 5 to 97 wt. % monofunctional basic structural elements A1 of general formula (II), wherein R?1¿-R?6¿ ...
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WO/1999/020389A1 |
Anionic clay compounds such as hydrotalcite-like compounds can be made by a process wherein a non-hydrotalcite-like compound (or a hydrotalcite-like compound) are heat treated and then hydrated to form hydrotalcite-like compounds having ...
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WO/1999/020393A1 |
The invention relates to a method for separating specific groups of elements, especially groups of various metals and semi-metals, from aqueous solutions using ion-exchange membranes. According to the invention, three groups comprising a...
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WO/1999/017879A2 |
Minerals which reversibly fix ions, in particular NO¿3??-¿, i.e. that can exchange them, can be used as fertilizers and soil conditioners, as well as for the purification and treatment of water, particularly for the elimination of nitr...
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